1 | #!/usr/bin/env bash
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2 | #
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3 | # Test how long it takes to read many files
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4 |
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5 | big-stream() {
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6 | cat */*.py
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7 | # Python messes up here!
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8 | #*/*/*.py
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9 | }
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10 |
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11 | setup() {
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12 | for i in {1..2}; do
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13 | big-stream
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14 | done > $BIG_FILE
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15 |
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16 | wc -l $BIG_FILE
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17 | }
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18 |
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19 | py3-count() {
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20 | echo '=== python3'
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21 |
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22 | # Buffered I/O is much faster
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23 | python3 -c '
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24 | import sys
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25 | i = 0
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26 | for line in sys.stdin:
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27 | i += 1
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28 | print(i)
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29 | '
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30 | }
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31 |
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32 | awk-count() {
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33 | echo '=== awk'
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34 | awk '{ i += 1 } END { print i } '
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35 | }
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36 |
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37 | ysh-count() {
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38 | echo '=== ysh'
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39 |
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40 | local ysh=_bin/cxx-opt/ysh
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41 | ninja $ysh
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42 |
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43 | # New buffered read!
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44 | $ysh -c '
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45 | var i = 0
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46 | for _ in <> {
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47 | setvar i += 1
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48 | }
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49 | echo $i
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50 | '
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51 | }
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52 |
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53 | usr1-handler() {
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54 | echo "pid $$ got usr1"
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55 | }
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56 |
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57 | exec-sh-count() {
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58 | local sh=$1
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59 | local do_trap=${2:-}
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60 |
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61 | echo "pid = $$"
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62 |
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63 | echo === $sh
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64 |
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65 | local code='
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66 | i=0
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67 | while read -r line; do
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68 | i=$(( i + 1 ))
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69 | done
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70 | echo $i
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71 | '
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72 |
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73 | if test -n "$do_trap"; then
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74 | # Register BEFORE creating pipeline
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75 | #trap usr1-handler USR1
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76 | code="
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77 | trap 'echo usr1 in \$\$' USR1
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78 |
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79 | $code
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80 | "
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81 | fi
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82 | #echo "$code"
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83 |
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84 | # need exec here for trap-demo
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85 | exec $sh -c "$code"
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86 | }
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87 |
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88 | readonly BIG_FILE=_tmp/lines.txt
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89 |
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90 | compare() {
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91 |
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92 | time wc -l < $BIG_FILE # warmup
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93 | echo
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94 |
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95 | time py3-count < $BIG_FILE
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96 | echo
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97 |
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98 | time awk-count < $BIG_FILE
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99 | echo
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100 |
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101 | time ysh-count < $BIG_FILE
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102 | echo
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103 |
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104 | local osh=_bin/cxx-opt/osh
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105 | ninja $osh
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106 |
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107 | for sh in dash bash $osh; do
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108 | # need $0 because it exec
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109 | time $0 exec-sh-count $sh < $BIG_FILE
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110 | echo
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111 | done
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112 | }
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113 |
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114 | trap-demo() {
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115 | exec-sh-count bash T < $BIG_FILE &
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116 | #$0 sh-count bash T &
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117 | #$0 sh-count dash T &
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118 |
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119 | local pid=$!
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120 | echo "background = $pid"
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121 | pstree -p $pid
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122 |
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123 | #wait
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124 | #echo status=$?
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125 | #return
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126 |
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127 | while true; do
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128 | # wait for USR1 to be registered
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129 | sleep 0.05
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130 |
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131 | kill -s USR1 $pid
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132 | local status=$?
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133 |
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134 | echo status=$status
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135 | if test $status -ne 0; then
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136 | break
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137 | fi
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138 |
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139 | done
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140 |
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141 | wait
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142 | echo status=$?
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143 | }
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144 |
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145 | "$@"
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146 |
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